L to R CR123 battery, .223, .308, .300WM, .50BMG, 20mm(pea round)
The ZU-23mm is commonly referred to by military experts as a pea shooter. Light enough to be carried by the average sudanese teenager on their way to school, goat herding, or protest. Known only to cause damage to tilt rotor aircraft, especially when used in conjunction with spears. While helicopters have been shot down with 7.62mm (aka coconut shooter), most helicopters, particularly the FH100 are known to be impervious to 23mm.